This is like The Six Million Dollar Soup—better, stronger, faster than any other version you’ve had. Once the onions caramelize, the broth only needs to simmer briefly to dissolve the Marmite. Look for jars of Marmite with other British ingredients on the international foods aisle. We’ve also streamlined the cheese-topped bread element: Broiling the bread and cheese on its own takes less time than toasting it as it floats in individual crocks, with the added benefit of keeping the crouton crispy longer.